Seedling burned tips

Hello guys. These are on their 5th day since germination in 45%coco40%soil and 15%perlite mix . Lights are cob led.
The seedlings look a bit pale green(not deep green) and the tips started to burn. The temp is around 29-31celsius(because its hot outside and its hard to keep it cool). humidity is between 40-50%. i have NOT given any nutrition yet to the seedlings.
any suggestions? this happened only on a few. Not all.
Appreciate all the help. Thank you
sorry for the bad pics, if necessary i can take better ones

water ph is aprox 6,7-6,8 and im letti g the "coco-soil-perlite mix ki da dry out and the i water them. i watered them 2 times with aprox 200ml 6,8ph water in the last 5 days. the cups are medium dry and not light yet, can feel there is still water in the cup

Your soil's too hot for seedlings. But don't worry about it... once the plant gets bigger it'll handle that soil no worries. New growth won't have burnt tips. Don't feed them anything until the plants look slightly pale, then start with veg nutes.

bigunyun said:

Your soil's too hot for seedlings. But don't worry about it... once the plant gets bigger it'll handle that soil no worries. New growth won't have burnt tips. Don't feed them anything until the plants look slightly pale, then start with veg nutes.

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Thanks for the info Sir, still learning and trying things

PLSHELP said:

Thanks for the info Sir, still learning and trying things

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You're welcome! No worries, we've all been there!